The Navistar proposal for the JLTV competition is heavily based on the company’s Saratoga, which according to Navistar fulfils 85 per cent of the JLYV requirements. (Navistar)
experience garnered by the company with its M-ATV (the Mrap-All Terrain vehicle that represented the evolution of the Mrap concept when mobility concerns started to emerge). The Oshkosh solution is based on a lighter vehicle equipped with the TAK-4 independent suspensions. That solution is further enhanced on the latest evolution of the L-ATV (which makes it Generation Six) thanks to the adoption
of the Oshkosh TAK-4i intelligent independent suspension system that provides a 508 mm wheel travel and thereby improved off-road mobility. The underbelly is free of major components such as transmission or transfer case that might become a threat in case of explosion and makes much use of the evolving protection kits adopted on M-ATVs to provide Mrap-
level protection to the crew. Although current requirements do not include a hybrid propulsion system, Oshkosh developed the ProPulse diesel-electric powertrain that allows it to churn out 70 kW of “exportable power”. The L-ATV was developed in six phases with first prototypes dealing with advanced independent suspensions and crew capsule development, a secondgeneration adding TAK-4i suspensions and a third-generation (taking part in the 2010 edition of the Baja 1000 and completing it) putting the ProPulse system to test. The 4th generation prototype featured an advanced crew protection system and was used in resistance tests. The fifth adopted a modular design for easy adoption of emerging technologies and threat mitigation systems while the sixth generation is the one currently proposed for the JLTV programme with over 40,000 km of experience in the wheels.
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